EP2288689A1 - Procede de conditionnement de levure seche - Google Patents
Procede de conditionnement de levure secheInfo
- Publication number
- EP2288689A1 EP2288689A1 EP09742421A EP09742421A EP2288689A1 EP 2288689 A1 EP2288689 A1 EP 2288689A1 EP 09742421 A EP09742421 A EP 09742421A EP 09742421 A EP09742421 A EP 09742421A EP 2288689 A1 EP2288689 A1 EP 2288689A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inert gas
- container
- package
- station
- dry yeast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
- B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B25/00—Packaging other articles presenting special problems
- B65B25/001—Packaging other articles presenting special problems of foodstuffs, combined with their conservation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
- B65B39/04—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers having air-escape, or air-withdrawal, passages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
- B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
- B65D81/2069—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas in a special atmosphere
- B65D81/2076—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas in a special atmosphere in an at least partially rigid container
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/04—Preserving or maintaining viable microorganisms
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/14—Fungi; Culture media therefor
- C12N1/16—Yeasts; Culture media therefor
- C12N1/18—Baker's yeast; Brewer's yeast
Definitions
- the present invention relates to a method for packaging dry yeast in a hermetically sealed package with a reduced residual oxygen content.
- Bakery yeast can be transported and stored in liquid form, in compressed form or in dried form.
- dry yeast is meant yeast containing less than 10% of wet matter and preferably less than 4 to 5% of wet matter. Dry yeast can be prepared in the form of granules or vermicelli or in the form of a powder or ferrule before being packaged in a vacuum pack.
- Vacuum packaging has the advantage of suppressing any oxygen content which causes a rapid decrease in the ferment capacity of the dry yeast. Vacuum packaging, however, has the disadvantage of being expensive. In addition, after a first opening, the vacuum packaging is generally difficult to close tightly and the yeast then quickly loses its power ferment.
- Document FR-A-2 183 932 proposes a process for packaging materials liable to deteriorate their useful properties over time (in particular yeast).
- An inert gas is injected into an envelope containing the active material to eject air from the envelope. After partial sorption of the gas by the active ingredient, the envelope is sealed to reveal a sub-atmospheric pressure in the package.
- GB-A-23030 proposes to package dry yeast in a metal or plastic packaging under vacuum or in a nitrogen atmosphere.
- the document WO-A-2006/000065 relates to a powder composition containing active yeast packaged in a package having at least 5% of inert atmosphere after closure.
- the composition does not completely fill the package which has a remaining volume of inert atmosphere.
- the residual oxygen content in the package is less than 2% after closure.
- This document indicates that the package may be sealed under a nitrogen atmosphere but does not specify how this atmosphere is created or maintained throughout the packaging process. There is therefore a need for a dry yeast packaging process that can be implemented at atmospheric pressure and that ensures a low residual oxygen content and preferably less than 4% after closure of the packaging for optimal preservation yeast for at least 2 years.
- the invention proposes to precisely control the atmosphere before, during and after the filling of the container until the hermetic closure of the package.
- the invention provides a method of packaging dry yeast in a package, the method comprising the steps of: injecting inert gas into a container for receiving dry yeast; injecting inert gas into a dry yeast dosing station; injecting inert gas into the container containing a dose of dry yeast before sealing the package.
- the method according to the invention may comprise one or more of the following characteristics: injecting inert gas into a dry yeast reservoir; the inert gas is injected at several points of the dosing station; the inert gas is injected into at least one of three points arranged at the inlet and on either side of a metering device of the metering station; - The inert gas is injected into at least one of three points arranged at the entrance and on either side of a hopper of the metering station; injecting inert gas into a dust extraction system associated with the dosing station; circulating inert gas around the container between the yeast dosage and the closure of the package; maintaining an inert atmosphere in a chamber comprising an inert gas injector in the container before filling, the metering station and an inert gas diffusion ramp after filling the container; the injected gas is selected from carbon dioxide, nitrogen, argon or a mixture thereof; injecting inert gas before sealing the package is to introduce liquid nitrogen or dry ice
- the invention also provides equipment for packaging dry yeast in a package, the equipment comprising: an injector adapted to inject inert gas into a container for receiving dry yeast; - a dry yeast dosing station; an injector adapted to inject inert gas into the dosing station; a sealing station of the packaging; an injector adapted to inject inert gas into the container before closing the package.
- the equipment according to the invention may comprise one or more of the following characteristics: an injector adapted to inject inert gas into a dry yeast reservoir; the metering station has a plurality of inert gas injection points distributed over a hopper and a metering device; the metering station comprises at least one of three inert gas injection points arranged at the inlet and on either side of the metering device; - The metering station comprises at least one of three inert gas injection points disposed on either side of the hopper; an injector adapted to inject inert gas into a dust extraction system associated with the metering station; a diffusion ramp adapted to diffuse inert gas around the container between the metering station and the closure station; a controlled inert atmosphere chamber comprising the inert gas injector in the container before filling, the metering station and the diffusion ramp.
- the invention thus relates to a dry yeast package packaged according to the process of the invention, containing less than 4% oxygen after closure.
- FIG. 3 a diagram of the dosing system of the installation of Figure 2.
- the invention provides a method for packaging dry yeast in a package.
- the packaging thus obtained contains less than 6% residual oxygen after closure and preferably less than 4%.
- residual oxygen means the amount of oxygen in the gas phase contained in the closed package.
- ferment losses of yeast are of two types. On the one hand oxidative losses that are proportional to the amount of oxygen available in the package; and on the other hand the so-called non-oxidative losses which are a function of the duration and the storage temperature. The higher the storage temperature, the more ferment losses are important; and the higher the percentage of residual oxygen present in the package, the greater the loss of potency.
- preservation simulation tests have been carried out with a package whose gas permeability is 0.003 cm.m -24h at a temperature of the order of 26 ° C. These tests showed acceptable yeast conservation for 12 months if the initial oxygen percentage in the package is 6% or less; and an acceptable storage for 24 months if the percentage of initial oxygen in the package is less than or equal to 4%.
- FIG. 1 schematically illustrates such a package 10.
- the package may have a general box shape with a bottom, side walls and a hermetically sealed top, for example by welding.
- the box forming the package may consist of a multilayer sheet shaped container by folding and gluing or welding.
- the multilayer film may comprise in particular aluminum, polyester, polypropylene, polyethylene and / or polyamide.
- the package may be a Tetrapak® type box for example.
- Such a package is easy to open; a tear initiation of the weld may for example be provided.
- Such a package may also be provided with closure means after a first opening, for example a closed screwed or clipped closure of a sealed lid before the first opening.
- the package 10 is for conditioning dry yeast at atmospheric pressure.
- Yeast 20 occupies the major part of the package; at least 50% of the volume of the packaging.
- the top of the package has an empty area of product.
- a residual space 30 is present in the package after closing; this residual space constitutes the gaseous phase contained in the closed package.
- Residual space 30 occupies about 5% or more of the volume of the closed package.
- the residual space 30 be composed of a dry artificial atmosphere with a low oxygen content. In particular, it is desired to have a residual oxygen content of less than 4% of the gaseous volume of the closed package.
- the invention proposes a dry yeast packaging process in which the atmosphere is precisely controlled before, during and after the filling of the container until the hermetic closure of the package.
- FIG. 2 illustrates an installation for the implementation of such a packaging method.
- Figure 2 shows a reservoir 100 of dry yeast.
- a given quantity of dry yeast is taken from this reservoir 100 by a dosing station 200 to be introduced into a container 9 which is then hermetically sealed on a closure station 600 to form a closed package 10.
- the invention proposes to control the conditioning atmosphere by injecting inert gas before, during and after filling the container.
- a gas injector 3 is thus provided for injecting inert gas into the container 9 before filling so as not to mix yeast with a rich atmosphere. oxygen.
- a gas injector 2 is also provided for injecting inert gas into the metering station 200 to limit the introduction of oxygen at the time of introduction of the yeast into the container.
- inert gas can be injected into the yeast tank 100 as the yeast is withdrawn from the tank 100.
- another gas injector 4 may also be provided at a dust extraction system 400 attached to the metering station 200; the yeast causes the inert gas thus injected into its fall from the metering station 200 to the container 9.
- the method of the invention also proposes to inject the inert gas just before sealing the package.
- a gas injector 7 is thus provided before the closure station 600.
- the sealing of the package 10 can be done by welding polyester layers of the multilayer sheet forming the container. Such a weld can be achieved by blowing hot air for example. The hot air is, however, heavily loaded with oxygen.
- liquid nitrogen 7 can be poured into the container containing a dose of yeast. Expansion of the liquid nitrogen will effectively remove air still present in the top of the container before sealing the container to form a sealed package.
- Other methods of sealing can be envisaged without departing from the scope of the invention, such as for example a heat-resistance weld or an ultrasonic weld. Dry ice can also be used instead of or in addition to liquid nitrogen.
- FIG. 2 also shows an enclosure 500 gathering the gas injector 3 of the empty container 9, the metering station 200 with the dust extraction system 400 and an inert gas diffusion ramp 5.
- This gas diffusion ramp 5 allows to diffuse inert gas above and around the container already filled with a dose of yeast but not yet hermetically closed. This diffusion ramp thus makes it possible to maintain a low oxygen atmosphere in the container before closing.
- An injection of inert gas 6 is also provided in the enclosure 500 in order to mitigate the introduction of oxygen provided by the movements of the containers.
- the atmosphere in the enclosure 500 can be controlled to maintain an oxygen level of the order of 15%.
- FIG. 3 shows a diagram of the dosing system 200. It is sought to reduce as much as possible the oxygen content contained in the yeast itself before it is introduced into the container 9 because the oxygen supplied by the yeast into the container is difficult. to be eliminated on the packaging line. In order to reduce as much as possible the oxygen content provided by the yeast itself during the assay, it is proposed to inject inert gas at several points of the dosing station. In FIG. 3, six injection points are illustrated but it is understood that only one or some of these points or others may be used during the implementation of the method of the invention.
- the metering station 200 comprises a hopper 210 and a metering device 220.
- an inert gas injection point A at the inlet of the metering device 220 and two injection points D, E on either side of the metering device 220 can be provided.
- the injected gas may be carbon dioxide CO 2 , nitrogen N 2 or any other inert gas such as argon Ar.
- Carbon dioxide CO 2 is a gas heavier than nitrogen; it can be advantageously used for the injection of inert gas into the container before and after dosing
- injection points 3, 4 and 5 because it will remain in the container longer than nitrogen because of its density.
- the N 2 nitrogen will preferably be used for the tank 100, the metering station 200 and the enclosure 500 (injection points 1, 2 and 6 in particular) for reasons of safety. However, it is understood that a mixture of these gases can also be used at each or some of the injection points.
- liquid nitrogen or a pellet of dry ice will preferably be chosen in order to benefit from the expansion effect of the gas in order to effectively expel oxygen. from the top of the container at the time of closing.
- the flow rate of the injected gas must be sufficient to ensure a significant replacement of the ambient air by the injected inert gas.
- the flow rate can be regulated between the different injection points. It will be sought to guarantee a flow rate greater than 0.7 m 3 / h at any injection point with a much higher flow rate (greater than 2 m 3 / h) at the injection points in the container before filling 3 and at the level of the injection point. the dosing station 2, 4.
- the method of the invention allows the packaging of dry yeast in a package at atmospheric pressure containing less than 4% oxygen in the gaseous volume of the package after closure. Such a method allows an optimal conservation of the yeast over a long period.
- the residual oxygen level is measured using an OXI-BOX Mobile 02-gas analysesr device from Rycobelgroup and according to the procedure provided by the manufacturer.
- the packaging used is a multilayer comprising, from the outside to the inside, a polyethylene layer, a cardboard layer, an aluminum layer 6.35 ⁇ m thick and a polyethylene layer. This package is provided by the company Elopak and has a permeability to oxygen less than 0.05 cm 3 .m 2 .24h.
- the cap of the packaging can be a conventional welded plug from the outside or an Elopak "Pure Twist" plug welded from the outside. A "Pure Twist" type plug is preferred because it can be welded without altering the aluminum layer of the package.
- the yeast Before being packaged in packaging, the yeast must have the lowest possible oxygen level. If the yeast is not "gassed" before introduction into the container 9, it will bring a volume of oxygen difficult to eliminate on the production line. There is thus a first nitrogen injection at the gassing point 1 at the reservoir 100 and a second nitrogen injection 2 at 5 points at the metering station 200.
- a gassing point 5 is also provided after filling the container 9 with a diffusion ramp so as to maintain a low oxygen atmosphere in the container which is not yet hermetically sealed. .
- a nitrogen injection 6 is also provided at two points in the chamber 500 grouping the injection points 3, 4 and 5 so that the volume of air displaced during the transport of the container 9 has a higher oxygen level. low possible.
- a second series of conditioning tests was implemented with 7 gassing points.
- the 6 gassing points described with reference to the first series were maintained, to which was added a nitrogen injection 7 at the closure station 600, in order to mitigate the effects of the air-welding system. hot and to ensure the lowest possible oxygen level at the top of the package before closing.
- the results show that a liquid nitrogen dose of 16 ms allows to lower the residual oxygen level in the packaging to 2.2% and that a liquid nitrogen dose of 176 ms makes it possible to reach a rate of residual oxygen in the package of 1.8%.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Biotechnology (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Genetics & Genomics (AREA)
- Mycology (AREA)
- Biochemistry (AREA)
- Biomedical Technology (AREA)
- Virology (AREA)
- Microbiology (AREA)
- Tropical Medicine & Parasitology (AREA)
- Medicinal Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Botany (AREA)
- Dispersion Chemistry (AREA)
- Vacuum Packaging (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Packages (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0802501A FR2930870B1 (fr) | 2008-05-06 | 2008-05-06 | Procede de conditionnement de levure seche |
| PCT/IB2009/005436 WO2009136248A1 (fr) | 2008-05-06 | 2009-04-30 | Procede de conditionnement de levure seche |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2288689A1 true EP2288689A1 (fr) | 2011-03-02 |
| EP2288689B1 EP2288689B1 (fr) | 2012-05-16 |
Family
ID=39870022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09742421A Active EP2288689B1 (fr) | 2008-05-06 | 2009-04-30 | Procede de conditionnement de levure seche |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2288689B1 (fr) |
| DK (1) | DK2288689T3 (fr) |
| ES (1) | ES2387601T3 (fr) |
| FR (1) | FR2930870B1 (fr) |
| WO (1) | WO2009136248A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3077468B1 (fr) * | 2018-02-02 | 2021-12-17 | Pascal Philibert | Levain et son procede de conditionnement |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3077405A (en) * | 1962-03-05 | 1963-02-12 | Gen Foods Corp | Process for preparing an aromatized free-flowing soluble coffee |
| US3449134A (en) * | 1965-06-30 | 1969-06-10 | Mira Pak Inc | Method for packaging in deoxygenated environment |
| GB1230205A (fr) * | 1968-11-08 | 1971-04-28 | Koninklijke Gist Spiritus | |
| GB1431047A (en) * | 1972-05-09 | 1976-04-07 | Gist Brocades Nv | Packaging of materials |
| FR2813279B1 (fr) * | 2000-08-28 | 2002-12-27 | Bel Fromageries | Procede et systeme de conditionnement de fromages a croute fleurie |
| AR049533A1 (es) * | 2004-06-29 | 2006-08-09 | Puratos Nv | Producto empaquetado para la industria de la planificacion de una composicion en polvo |
| FR2900639A1 (fr) * | 2006-05-02 | 2007-11-09 | Florette Soc Par Actions Simpl | Procede de conditionnement de produits vegetaux prets a l'emploi |
-
2008
- 2008-05-06 FR FR0802501A patent/FR2930870B1/fr active Active
-
2009
- 2009-04-30 DK DK09742421.2T patent/DK2288689T3/da active
- 2009-04-30 ES ES09742421T patent/ES2387601T3/es active Active
- 2009-04-30 EP EP09742421A patent/EP2288689B1/fr active Active
- 2009-04-30 WO PCT/IB2009/005436 patent/WO2009136248A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009136248A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2288689B1 (fr) | 2012-05-16 |
| DK2288689T3 (da) | 2012-08-27 |
| WO2009136248A1 (fr) | 2009-11-12 |
| FR2930870A1 (fr) | 2009-11-13 |
| FR2930870B1 (fr) | 2010-05-21 |
| ES2387601T3 (es) | 2012-09-27 |
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